Răspuns :

Răspuns:

Explicație pas cu pas:

[tex]\dfrac{1}{2}ln\dfrac{n^{2}+2n}{3}=\dfrac{3ln2}{2}~|*2,~rezulta~~ ln\dfrac{n^{2}+2n}{3}=3ln2,~~~ln\dfrac{n^{2}+2n}{3}=ln2^{3},~~~\\\dfrac{n^{2}+2n}{3}=8 |*3,~~~n^{2}+2n=24,~~~n^{2}+2n-24=0[/tex]

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